Carbon and copy sheet unit



May 12, 1942.

H. W. ROTH ERICK ARBONIAND COPY SHEET UNll F1 e May 15,

Patented May 12, 1942 UNITED STATES PATENT OFFICE CARBON AND COPY snnn'r UNIT Howard William Rotherick, Chicago, 111. Application May 15, 1941,SerialNo. 393,525

I 4 Claims. (Cl. 282-26) This invention relates to carbon and copy sheet unit, andmore particularly to a one-piece combination transfer and copy shee It is an object of the present invention to provide a simple and economical unit which includes a transfer sheet and a copy sheet which are integral with each other.

Another object of the present invention is to provide a novel transfer and copy sheet unit comprising a single piece of paper arranged be folded transversely'of its length at its middle and in which a portion on one side of said transverse fold is provided with a transfer medium thereon. I

A further object of the present invention is to provide a novel one-piece combination record sheet and transfer sheet which is flexible throughout its extent and substantially equal in thickness at all parts thereof and in which there is no thick or unflexible stub portion or other part forming excess thickness which would interfere with the free use of the unit in typewriting machines or in other forms of writing machines.

A still further object of the present invention is to provide a novel one-piece combination transfer and copy sheet and a method of making the same.

Another and further object of the present invention is to provide a novel one-piece transfer and copy sheet unit in which the tion has a transversely weakened line in proximity to the region where it merges into the transfer sheet to permit ready severance of the copy sheet from the unit.

Another and still further object of the present invention is to provide a novel one-piece combination transfer and copy sheet in which the copy sheet portion is folded back over the transfer sheet portion, and in which the copy sheet portion and the transfer sheet portion have weaksubstantially of said paper copy sheet 'porpresent invention ened lines of severance in proximity to the fold and at different distances therefrom.

The novel features which I believe to be characteristic of my invention-are set forth in particularity in the appended claims. My invention itself, however, both as to its manner of construction, organization, and method of operation, together .with further objects and advantages thereof, may best be understood by reference to the following description, taken in connection with the accompanying drawing, in which:

Figure 1 is a plan view of a single sheet of paper having a portion thereof carbonized to provide a transfer medium and which is arranged instead of a single transversely weakened line,

as is shown in Figure 1; and,

Figure 4 is a view of the, paper shown in Figure 3 afterit has been folded and showing how both the .copy sheet and the transfer sheet may be torn along weakened lines.

Referring now to the first embodiment of the which is illustrated in Figures 1 and 2 of the drawing, there is shown a single sheet of paper III which is carbonized or provided with some other suitable transfer medium as at II. This carbonized portion ll extends over slightly less than one-halfof the length of the complete sheet l0. A transversely weakened line is provided as at l2 on the uncoated or uncarbonized portion I3 of the sheet Ill. The unbroken line l4 indicates the line of fold or the point at which the uncarbonized portion l3 will be folded over the carbonized portion l I.

In Figure 2, it will beseen that the portion of the paper in Figure 1 to the right of the line of fold M is slightly longer than the portion of the paper to the left of the line of fold M. This is for the purpose of enabling the copy sheet portion l3 to extend slightly below the bottom of the carbonized portion II as at [5.

The above unit provides an extremely simple and economical combination carbon sheet and copy sheet unit which may be employed particularly in typewriters for making carbon copies. It will furthermore be understood by those skilled in the art that the original record sheet may be of any weight of bond or other paper or materials may be made.

It will further be understood by those skilled in the art that the above described unit may be used with either the back or uncarbonized of the carbonized portion ll against the original record sheet or with the back side of the copy sheet portion against the original their respective transversely ventional arrangement of tween the record and copy sheet, while the latter from the remaining portion of portion may be reused, if desired. More The former case provides the conthe carbon sheet berecord sheet.

case is sometimes used where the copy sheet is of thin tissue.

After the record-has sheet portion l3 of the the copy sheet portion been made on the copy unit shown in Figure 2, l3 may be quickly torn the unit by grasping the upper portion l6 of the unit in one hand and the lower edge l of the copy sheet portion in the other hand and then exerting a pull therebetween. A quick, sharp jerk upon the sheet will be suflicient to sever the copy sheet portion l3 along the weakened line l2 from the remainder of the unit.

In making units of the type described above, a portion of the sheet II is carbonized, provided with a transversely weakened line, and folded. Because of the extreme simplicity of this unit, it will at once be apparent to those skilled in the art that an extremely economical article will result. While the nature of the transfer medium may vary through wide limits without departing from the spirit and scope of the present invention, it is preferable that the transfer medium be of the type known to the art as a one time carbon.

In Figures 3 and 4 of the drawing, a modified form of the invention is illustrated, which provides a construction in which the'carbon sheet particularly, as shown in Figure 3, a single sheet of paper I! which is carbonized -or provided with some other suitable transfer medium, as at I8. In this form of the invention, however, two transverse lines of severance l9 and 20 are provided instead ofa single line of severance. One transverse line of 'severance I9 is provided to the right ofthe line of fold 2| while a second transverse line of severance 2B is provided to the left of the While I have shown and described certain particular embodiments of my invention, it will, of course, be understood that I do not wish to be limited thereto, since many modifications may be made, and I, therefore, contemplate by the appended claims to cover all such modifications as fall within the true spirit and scope of my invention.

I claim as my invention:

1. A single sheet of paper having a single transverse line of fold spaced from the transverse center line thereof, a portion of said paper on one side of said fold being carbonized, the other portion on the opposite side of said fold extending beyond said carbonized portion and said paper being folded along said line of fold, said carbonized surface of said one portion lying opposite to and facing the portion of said paper on the opposite side of said line'of fold, and one of said portions of said paper having a transversely weakened line in proximity to said line of fold.

2. A single sheet of paper having a single transverse line of fold, a portion of said paper on one side of said fold being carbonized, and said paper being foldedalong said line of fold, said carbonized surface of said one portion lying opposite'to and facing the portion of said paper on the opposite side of said line of fold, said last mentioned portion of said paper having a transversely weakened line in proximity to said line of fold, and said carbonized portion of said paper also having a transversely weakened line in proximity to said line of fold but in more closely spaced relation thereto than the transversely weakened line of the other portion of the I sheet.

line of fold 2|, and for reasons which will here- 7 inafter be apparent, the two weakened lines I! and are spaced at different distances from the line of fold 2|. As-in the first form of the invention, the portion of the paper 11 to the right of the line of fold 2| provides a copy sheet portion 22.

In Figured of the drawing, the paper I! is shown after it has been folded to providea copy sheet portion 22 and atransfer sheet portion 23. It will be observed that the line of fold 24 is positioned so that the lower edge 24 of the copy sheet portion 22 extends below the lower edge 25 of the carbon sheet portion 23. It will further be obmrved that the weakened line of tear I9 is spaced below the weakened line of tear 20 in the unit shown in Figure 4. This is for a the purpose of permitting a-personto grasp the top portion 2 of the unit a sufficient distance down from the fold so that he may tear only the copy sheet portion 22 from the unit, if he so desired. After the desired carbon record has been made on the copy sheet and the copy sheet u removed from the unit, the carbon sheet may be torn from the top portion 26 along the weakened line of severance 20 and the carbon sheet portion 23 may then be reused in the ordinary and conventional manner.

3. A single sheet of paper having a single transverse line of fold, a portion of said paper on one side of said fold being carbonized, and said paper being folded along said line of fold, said car- -bonized surface of said one portion lying opposite to and facing the portion of said paper on the opposite side of said line of fold, said last mentioned portion of said paper having a transversely weakened line in proximity to said line of fold, and said carbonized portion of said paper also having a transversely weakened line in proximity to said line of fold, one of said transversely weakened lines being spaced at a. greater distance from said line of fold than the other of said transversely weakened line.

4. A sheet of paper having a transverse line of fold spaced from the transverse center line thereof to' provide portions of unequal length, said paper being folded along said line of fold whereby one of said portions extends beyond the other portion, the shorter of said portions having its inner surface carbonized to lie opposite and to face the other and longer portion of the paper on the opposite side of said line of fold, said shorter carbonized portionof the paper having a transversely weakened line in proximity to said line of fold, and said longer portion of the paper also having a transversely weakened line in proximity to said line of fold but spaced therefrom at a greater distance than the other weakened line on said shorter portion of the paper.

.HowARn WILLIAM ROTI-IERICK. 

